Web 2.0 refers to the evolution of the internet from static web pages to a more interactive and user-generated experience. This shift allowed users to create, share, and collaborate on content, leading to the rise of social media platforms like Facebook and Twitter. Key features of Web 2.0 include blogs, wikis, and video-sharing sites such as YouTube, which empower individuals to contribute their voices and ideas. This transformation has made the internet a dynamic space for communication, creativity, and community engagement, fostering a more participatory online culture.